螺纹攻牙钻孔径对照表

公制粗螺纹规格标准径2级牙钻孔径最大最小M1.0×0.250.750.7850.729M1.1×0.250.850.8850.829M1.2×0.250.950.9850.929M1.4×0.31.101.1421.075M1.6×0.351.251.3211.221M1.7×0.351.351.4211.321M1.8×0.351.451.5211.421M2.0×0.41.601.6791.567M2.2×0.451.751.8381.713M2.3×0.41.901.9791.867M2.5×0.452.102.1382.013M2.6×0.452.202.2382.113M3.0×0.52.502.5992.459M3.5×0.62.903.0102.850M4.0×0.73.303.4223.242M4.5×0.753.803.8783.688M5.0×0.84.204.3344.134M6.0×1.05.005.1534.917M7.0×1.06.006.1535.917M8.0×1.256.806.9126.647M9.0×1.257.807.9127.647M10×1.58.508.6768.376M11×1.59.509.6769.376M12×1.7510.3010.44110.106M14×2.012.0012.21011.835M16×2.014.0014.21013.835M18×2.515.5015.74415.294M20×2.517.5017.74417.294M22×2.519.5019.74419.294M24×3.021.0021.25220.752M27×3.024.0024.25223.752M30×3.526.5026.77126.211公制细螺纹规格标准径2级牙钻孔径最大最小M1.0×0.20.800.8210.783M1.1×0.20.900.9210.883M1.2×0.21.001.0210.983M1.4×0.21.201.2211.183M1.6×0.21.401.4211.383M1.7×0.21.451.5001.460M1.8×0.21.601.6211.583M2.0×0.251.751.7851.729M2.2×0.251.951.9851.929M2.3×0.252.052.0612.001M2.5×0.352.202.2212.121M2.6×0.352.202.2462.186M3.0×0.352.702.7212.621M3.5×0.353.203.2213.121M4.0×0.53.503.5993.459M4.5×0.54.004.0993.959M5.0×0.54.504.5994.459M5.5×0.55.005.0994.959M6.0×0.755.305.3785.188M6.0×0.55.505.5505.400M7.0×0.756.306.3786.188M7.0×0.56.506.5506.400M8.0×1.07.007.1536.917M8.0×0.757.307.3787.188M8.0×0.57.507.5207.400M9.0×1.08.008.1537.917M9.0×0.758.308.3788.188M10×1.258.808.9128.647M10×1.09.009.1538.917公制细螺纹规格标准径2级牙钻孔径最大最小M10×0.759.309.3789.188M10×0.59.509.5209.400M11×1.010.0010.1539.917M11×0.7510.3010.37810.188M12×1.510.5010.67610.376M12×1.2510.8010.91210.647M12×1.011.0011.15310.917M12×0.511.5011.52011.400M14×1.512.5012.67612.376M14×1.013.0013.15312.917M15×1.513.5013.67613.376M15×1.014.0014.15313.917M16×1.514.5014.67614.376M16×1.015.0015.15314.917M17×1.515.5015.67615.376M17×1.016.0016.15315.917M18×2.016.0016.21015.835M18×1.516.5016.67616.376M18×1.017.0017.15316.917M20×2.018.0018.21017.835M20×1.518.5018.67618.376M20×1.019.0019.15318.917M22×2.020.0020.21019.835M22×1.520.5020.67620.376M22×1.021.0021.15320.917M24×2.022.0022.21021.835M24×1.522.5022.67622.376M24×1.023.0023.15322.917M25×2.023.0023.21022.835M25×1.523.5023.67623.376M25×1.024.0024.15323.917M26×1.524.5024.67624.376M27×2.025.0025.21024.835M27×1.525.5025.67625.376M27×1.026.0026.15325.917M28×2.026.0026.21025.835M28×1.526.5026.67626.376M28×1.027.0027.15326.917M30×3.027.0027.25226.752M30×2.028.0028.21027.835M30×1.528.5028.67628.376M30×1.029.0029.15328.917M32×2.030.0030.21029.835M32×1.530.5030.67630.376M33×3.030.0030.25229.752M33×2.031.0031.21030.835M33×1.531.5031.67631.376M35×1.533.5033.67633.376M36×3.033.0033.25232.752M36×2.034.0034.21033.835M36×1.534.5034.67634.376美制特细螺纹规格2级牙钻孔径(UNEF)标准径最大最小No.12 -324.704.8264.6231/4 -325.605.6895.4875/16 -327.107.2647.0873/8 -328.708.8648.6627/16 -2810.2010.33710.1351/2 -2811.8011.93811.7109/16 -2413.2013.38513.1325/8 -2414.8014.96814.7323/4 -2017.8017.95717.6797/8 -2021.0021.13220.8541 -2024.1024.30724.029美制粗螺纹规格2级牙钻孔径(UNC)标准径最大最小No.1-64(1.854)1.551.5821.425No.2-56(2.184)1.801.8711.695No.3-48(2.515)2.102.1461.941No.4-40(2.845)2.302.3852.157No.5-40(3.175)2.602.6972.487No.6-32(3.505)2.802.8952.642No.8-32(4.166)3.403.5303.302No.10-24(4.826)3.903.9623.683No.12-24(5.486)4.504.5974.3441/4 -205.105.2574.9795/16 -186.606.7316.4013/8 -168.008.1537.7987/16 -149.409.5509.1441/2 -1310.9011.02310.5929/16 -1212.2012.44611.9895/8 -1113.6013.86813.3863/4 -1016.6016.84016.3077/8 -919.6019.76119.1771 -822.3022.60621.9711-1/8 -725.0025.34924.6381-1/4 -728.2028.52427.8131-3/8 -630.8031.11530.3531-1/2 -634.0034.29033.5281-3/4 -539.5039.82738.9642 -4-1/245.2045.59344.679美制细螺纹规格2级牙钻孔径(UNF)标准径最大最小No.0-80(1.524)1.251.3051.182No.1-72(1.854)1.551.6121.474No.2-64(2.184)1.851.9121.756No.3-56(2.515)2.102.1972.025No.4-48(2.845)2.402.4582.271No.5-44(3.175)2.702.7402.551No.6-40(3.505)2.903.0222.820No.8-36(4.166)3.503.6063.404No.10-32(4.826)4.104.1653.963No.12-28(5.486)4.604.7244.4961/4 -285.505.5885.3605/16 -246.907.0356.7823/8 -248.508.6368.3827/16 -209.9010.0339.7291/2 -2011.5011.60711.3299/16 -1812.9013.08112.7515/8 -1814.5014.68114.3513/4 -1617.5017.67817.3237/8 -1420.5020.67520.2701 -1223.3023.57123.1141-1/8 -1226.5026.74626.2891-1/4 -1229.6029.92129.4641-3/8 -1232.8033.09632.6391-1/2 -1236.0036.27135.814螺纹攻牙钻孔径对照表

美制迫牙丝攻钻孔径规格精度最大最小1 -64UNCG51.761.682 -56G42.041.963 -48G42.352.254 -40G52.642.545 -40G52.972.876 -32G53.223.118 -32G63.893.7810 -24G64.444.3012 -24G65.074.961/4\" -20G75.865.735/16\" -18G77.387.233/8\" -16G78.898.727/16\" -14G810.4010.021/2\" -13G811.9211.700 -80UNFG51.451.391 -72G51.771.702 -64G42.061.983 -56G42.372.294 -48G52.682.595 -44G52.992.906 -40G53.293.198 -36G53.913.8110 -32G64.534.4412 -28G65.135.031/4\" -28G76.005.915/16\" -24G77.537.423/8\" -24G79.108.997/16\" -20G810.6210.481/2\" -20G812.2012.06公制迫牙丝攻钻孔径规格精度最大最小M1.0×0.25G40.920.89M1.2×0.25G41.111.09M1.4×0.30G41.301.26M1.6×0.35G41.471.43M1.7×0.35G41.571.52M1.8×0.35G41.671.62M2.0×0.40G41.841.79M2.2×0.45G52.041.98M2.3×0.40G42.142.09M2.5×0.45G52.342.27M2.6×0.45G52.442.37M3.0×0.50G52.822.75M3.5×0.60G53.273.19M4.0×0.70G63.723.65M5.0×0.80G64.674.59M6.0×1.0G75.595.49M7.0×1.0G76.596.48M8.0×1.25G77.497.36M10×1.50G79.349.22M10×1.25G79.499.35M12×1.75G811.2311.09M12×1.25G911.5011.36英制电器螺纹规格钻孔径2BA4.0-4.23BA3.4-3.64BA3.0-3.25BA2.7-2.86BA2.4-2.5针车用螺纹规格标准径最大最小SM1/16 -801.251.2811.211SM5/64 -641.551.5931.513SM3/32 -561.91.9361.841SM3/32 -1002.12.1562.081SM1/8 -322.3(2.393)(2.233)SM1/8 -402.52.5512.421SM1/8 -442.52.6052.485SM1/8 -482.62.6572.547SM9/64 -322.7(2.790)(2.630)SM9/64 -402.92.9482.818SM11/64 -323.53.5843.424SM11/64 -403.73.7423.612SM3/16 -243.63.6583.498SM3/16 -283.83.8443.684SM3/16 -323.93.9803.820SM3/16 -404.054.1384.008SM7/32 -324.74.7744.614SM15/64 -285.05.0554.875SM1/4 -245.25.2665.086SM1/4 -285.45.4525.272SM1/4 -405.65.7265.596SM9/32 -205.75.8245.634SM9/32 -286.26.2566.066SM5/16 -186.36.4446.254SM5/16 -246.86.8646.674SM5/16 -286.97.0506.860SM11/32 -287.77.8437.653SM3/8 -187.98.0537.843SM3/8 -288.58.6378.447SM7/16 -169.39.4409.220SM7/16 -2810.110.22410.034SM1/2 -1210.310.42010.180SM1/2 -2011.311.41011.190SM1/2 -2811.711.81211.622SM9/16 -2012.913.01812.778英制管螺纹PS规格(新规格Rp)标准径最大最小1/16 -286.56.6326.4901/8 -288.58.6378.4951/4 -1911.411.54911.3413/8 -1914.915.05414.8461/2 -1418.618.77318.4893/4 -1424.024.25923.9751 -1130.230.47230.11011/4 -1138.839.13338.77111/2 -1144.745.02644.6642 -1156.556.83756.475PF规格(新规格G)标准径最大最小1/16 -286.76.8436.5611/8 -288.78.8488.5661/4 -1911.711.89011.4453/8 -1915.215.39514.9501/2 -1419.019.17218.6315/8 -1421.021.12820.5873/4 -1424.524.65824.1177/8 -1428.228.41827.8771 -1130.630.93130.29111/8 -1135.235.57934.93911/4 -1139.239.59238.95211/2 -1145.045.48544.84513/4 -1151.051.42850.7882 -1157.057.29656.656英制螺纹规格钻孔径硬材软材W1/8 -402.652.60W5/32 -323.253.20W3/16 -243.753.70W1/4 -205.105.00W5/16 -186.606.50W3/8 -168.007.90W7/16 -149.409.30W1/2 -1210.7010.50W9/16 -1212.3012.00W5/8 -1213.7013.50W3/4 -1016.7016.50W7/8 -919.5019.30W1 -822.4022.00W1-1/8 -725.0024.80W1-1/4 -728.3028.00美制管螺纹钻孔径规格NPT使用绞刀时不用绞刀时NPS1/16 -275.946.156.351/8 -278.338.438.741/4 -1810.7211.1311.133/8 -1814.2714.2714.681/2 -1417.4817.8618.263/4 -1422.6323.0123.421 -11-1/228.5828.9829.361-1/4 -11-1/237.3137.6938.101-1/2 -11-1/243.2643.6644.452 -11-1/255.1755.5856.36美制管螺纹钻孔径规格NPT使用绞刀时不用绞刀时NPS1/16 -275.946.156.351/8 -278.338.438.741/4 -1810.7211.1311.133/8 -1814.2714.2714.681/2 -1417.4817.8618.283/4 -1422.6323.0123.421 -11-1/228.5828.9829.361-1/4 -11-1/237.3137.6938.101-1/2 -11-1/243.2643.6644.452 -11-1/255.1755.5856.36英制管螺纹标准径有效牙部标准长度PT规格之长度(最(最小)中(新规格Rc)小)中之母之母使用绞刀时不用绞刀时螺牙内径螺牙内径1/16 -286.16.26.2446.3841/8 -288.18.28.2498.3881/4 -1910.711.010.96211.1743/8 -1914.214.514.44814.6581/2 -1417.618.017.97918.2633/4 -1423.023.523.37823.6631 -1129.029.529.45929.82211/4 -1137.538.037.97638.33911/2 -1143.444.043.86944.2322 -1154.955.555.41255.844